Pickling yog tshem tawm cov nplai uas tshwm sim los ntawm kev nthuav tawm cov ntaub ntawv rau qhov kub thiab txias. Cov nplai tshwm sim los ntawm cov hlau chromium uas nyob ib sab tuaj yeem raug tshem tawm los ntawm kev kho tshuaj los ntawm kev xaiv los ntawm sab nraud ntawm stainless hlau alloy. Machining feem ntau ua rau muaj kev puas tsuaj lossis puas tsuaj rau cov chaw hlau. Txhawm rau kom tsis txhob muaj qhov tsis zoo no, nws yooj yim dua tshem tawm cov hlau ntau dhau los ntawm kev siv tshuaj ntxuav, vim lawv tuaj yeem tshem tawm cov txheej txheem ntxiv ntawm cov hlau tsis huv. Cov txheej txheem no siv cov tshuaj acidic, suav nrog nitric acid thiab hydrofluoric acid.
Passivation yog qhov tshwm sim uas tshwm sim hauv cov hlau tsis muaj hlau nrog cov ntsiab lus chromium siab hauv cov hlau. Lub alloy ntawm duplex steel muaj nyob nruab nrab ntawm 19 feem pua thiab 32 feem pua chromium. Raws li duplex stainless hlau muaj cov qib siab ntawm chromium hauv lawv cov alloys, qhov chaw ntawm cov khoom no tuaj yeem tsim cov txheej txheem oxide passivated rau saum npoo ntawm cov hlau. Txawm li cas los xij, qee qhov stainless hlau alloys tsis muaj chromium txaus los tsim cov txheej txheem ntawm tus kheej-kho passivation oxide, uas ua rau oxidation corrosion ntawm cov khoom.
